util/system/flock.h


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#pragma once

#include "error.h" 
#include "defaults.h"
#include "file.h"

#if defined(_unix_)

    #include <sys/file.h> 
    #include <fcntl.h> 

static inline int Flock(int fd, int op) { 
    return flock(fd, op); 
} 
 
#else // not _unix_

    #ifdef __cplusplus 
extern "C" {
    #endif 

    #define LOCK_SH 1 /* shared lock */ 
    #define LOCK_EX 2 /* exclusive lock */ 
    #define LOCK_NB 4 /* don't block when locking */ 
    #define LOCK_UN 8 /* unlock */ 

    int Flock(void* hndl, int operation); 
    int flock(int fd, int operation); 
    int fsync(int fd); 

    #ifdef __cplusplus 
}
    #endif 

#endif // not _unix_